INSECTICIDES. 



85 



Outdoor Experiments, commenced July _Z, 1897. Larc<v in 



Sixth Staye. 



PHENOLATE OF LEAD. 



Field Experiment. 



Grayish white salt of low specific gravity ; mixes with 

 difficulty in water ; particles coarse ; 10 pounds to 150 gal- 

 lons ; glucose, <i quarts to 150 gallons ; large apple tree 

 badly infested ; larvae in fifth and sixth stages. Fenwick 

 Street, Maiden. 



Sprayed July 1, 1897 : - 

 July 3. No larvae dead. 

 July 10. No larvte dead. No burning. 

 July 19. Xo larva? dead. Greater part of larva? pupating. 

 July 21. No larva? dead. No burning Discontinued. 



It would seem as though so powerful an organic poison as 

 phenol would have had more effect upon the larvae. 



